ICSE Class 11 Electricity and Electronics | 6. Chemical Effect of Electric Current by Pavan | Learn Smarter
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6. Chemical Effect of Electric Current

The chapter discusses the chemical effect of electric current, emphasizing its role in processes like electrolysis, electroplating, and the functionality of electrochemical cells. It highlights the significance of electrolysis in driving non-spontaneous reactions and outlines Faraday's laws that govern the relationship between electric charge and mass changes during electrolysis. Additionally, it explores various applications of these concepts across different industries, including water purification and battery technologies.

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Sections

  • 6

    Chemical Effect Of Electric Current

    The chemical effect of electric current involves changes in substances as electric currents lead to chemical reactions, forming the basis for electrolysis, electroplating, and functionality in batteries.

  • 6.1

    Introduction To The Chemical Effect Of Electric Current

    The chemical effect of electric current involves changes in substances when an electric current passes through them, leading to chemical reactions.

  • 6.2

    Electrolysis And Its Applications

    Electrolysis is a chemical process that uses electrical energy to drive non-spontaneous reactions in an electrolyte, leading to significant applications in industries.

  • 6.2.1

    What Is Electrolysis?

    Electrolysis is a process that uses electrical energy to drive non-spontaneous chemical reactions, facilitating decomposition of compounds through the movement of ions in an electrolyte.

  • 6.2.2

    Electrolytic Cell

    An electrolytic cell is a device comprising two electrodes immersed in an electrolyte, where electric current drives non-spontaneous chemical reactions.

  • 6.2.2.1

    Anode (Positive Electrode)

    The anode, as the positive electrode in an electrolytic cell, is where oxidation occurs and electrons are lost by ions or molecules.

  • 6.2.2.2

    Cathode (Negative Electrode)

    The cathode is the negative electrode in an electrolytic cell where reduction occurs during electrolysis.

  • 6.2.3

    Faraday's Laws Of Electrolysis

    Faraday's Laws of Electrolysis explain the relationship between electric charge and the mass of substances altered during electrolysis.

  • 6.2.3.1

    Faraday's First Law Of Electrolysis

    Faraday's First Law states that the mass of a substance deposited during electrolysis is directly proportional to the electric charge passed.

  • 6.2.3.2

    Faraday's Second Law Of Electrolysis

    Faraday's Second Law states that the mass of different substances deposited or liberated during electrolysis is proportional to their equivalent masses when the same amount of electric charge passes through.

  • 6.3

    Electroplating

    Electroplating is the deposition of a metal layer on a surface using electrolysis to enhance appearance and durability.

  • 6.4

    Electrochemical Cells

    Electrochemical cells transform chemical energy into electrical energy through redox reactions, involving anodes and cathodes.

  • 6.4.1

    What Is An Electrochemical Cell?

    An electrochemical cell transforms chemical energy into electrical energy through oxidation and reduction reactions.

  • 6.4.2

    Types Of Electrochemical Cells

    This section covers the two main types of electrochemical cells: galvanic cells and electrolytic cells, explaining their functioning and applications.

  • 6.4.2.1

    Galvanic Cell (Voltaic Cell)

    A galvanic cell converts chemical energy into electrical energy through spontaneous redox reactions.

  • 6.4.2.2

    Electrolytic Cell

    An electrolytic cell uses electric current to drive chemical reactions, consisting of an anode and cathode immersed in an electrolyte.

  • 6.4.3

    Applications Of Electrochemical Cells

    Electrochemical cells have varied applications, prominently in batteries and fuel cells, which play crucial roles in energy storage and conversion.

  • 6.5

    Conductors And Non-Conductors In Electrolysis

    This section explains the essential roles of conductors and non-conductors in the electrolysis process.

  • 6.5.1

    Conductors In Electrolysis

    Conductors are essential for electrolysis, enabling the flow of electricity through electrolytic cells.

  • 6.5.2

    Non-Conductors In Electrolysis

    This section discusses the role of non-conductors in the electrolysis process, highlighting their function as insulators in electrolytic setups.

  • 6.6

    Applications Of The Chemical Effect Of Electric Current

    This section discusses significant applications of the chemical effect of electric current, including electroplating, water purification, production of chemicals, and the use of electrochemical sensors.

  • 6.6.1

    Electroplating And Metal Purification

    Electroplating and metal purification utilize the chemical effect of electric current to improve metal surfaces and purify metals.

  • 6.6.2

    Water Purification

    Water purification involves using electrolysis to remove impurities from water through chemical reactions triggered by electric current.

  • 6.6.3

    Production Of Chemicals

    Electrolysis is a key process in the industrial production of various chemicals, such as chlorine and sodium hydroxide.

  • 6.6.4

    Electrochemical Sensors

    Electrochemical sensors utilize the chemical effect of electric current to detect various gases in environmental and medical applications.

  • 6.7

    Conclusion

    The chemical effect of electric current is crucial for various processes, including electrolysis, electroplating, and electrochemical cell functioning.

References

ee11-6.pdf

Class Notes

Memorization

What we have learnt

  • The chemical effect of elec...
  • Electrolysis utilizes elect...
  • Faraday's Laws of Electroly...

Final Test

Revision Tests